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Issue link: You can define the link type to define which issues will be modified by the operation. If the post function includes the link type is ANY option, the operation will be performed on any linked issues.
Parent / Sub-Task: The related issue is either a parent or a subtask of the issue.
Epic / Issue in Epic: The other issue is either an epic related by an epic link, or it is part of an epic. This is only applicable if you have Jira Software installed.
JQL: A JQL query will be executed to retrieve the issues that will be modified by the post function. You can use some placeholders in the JQL query, which will be replaced with the current field values of the issue in transition. For tips on writing the JQL query, see JQL Reference or our JQL Use Cases for some examples.
Issue in transition
We use the term 'Issue in Transition' when we refer refers to the issue for which a workflow condition is checked, for which a workflow validator is examined, or for which a workflow post function is performed; in other words, that issue triggered a workflow condition/validator/post function to be executed.
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